938204640 has 192 divisors, whose sum is σ = 3364441920. Its totient is φ = 244039680.

The previous prime is 938204627. The next prime is 938204651. The reversal of 938204640 is 46402839.

It is a happy number.

938204640 is a `hidden beast` number, since 9 + 3 + 8 + 2 + 0 + 4 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 938204595 and 938204604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174472 + ... + 179768.

It is an arithmetic number, because the mean of its divisors is an integer number (17523135).

Almost surely, 2^938204640 is an apocalyptic number.

938204640 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 938204640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1682220960).

938204640 is an abundant number, since it is smaller than the sum of its proper divisors (2426237280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

938204640 is a wasteful number, since it uses less digits than its factorization.

938204640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5362 (or 5348 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 938204640 is about 30630.1263464583. The cubic root of 938204640 is about 978.9620553139.

The spelling of 938204640 in words is "nine hundred thirty-eight million, two hundred four thousand, six hundred forty".